// Copyright 2022 PingCAP, Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <common/types.h>

#include <memory>

namespace DB
{
struct BlockStreamProfileInfo;
struct BaseRuntimeStatistics
{
    size_t rows = 0;
    size_t blocks = 0;
    size_t bytes = 0;

    UInt64 execution_time_ns = 0;

    void append(const BlockStreamProfileInfo &);
};

class ExecutorStatisticsBase
{
public:
    virtual String toJson() const = 0;

    virtual void collectRuntimeDetail() = 0;

    virtual ~ExecutorStatisticsBase() = default;

    const BaseRuntimeStatistics & getBaseRuntimeStatistics() const { return base; }

protected:
    BaseRuntimeStatistics base;
};

using ExecutorStatisticsPtr = std::shared_ptr<ExecutorStatisticsBase>;
} // namespace DB